Loom



Sept. 30, 1941.

H. S. CLARK LOOM Original Filed April 16, 1956 J J-Ls. (312.1%

Patented Sept. 30, 1941 LOOM Herbert Spencer Clark, Scarborough Township, assignor to Scarborough Ontario, Canada,

Guild, Limited, Scarborough Township, 0n-

tario, Canada Original application April 16,1936, Serial No.

- r 74,632. Divided and this application June 26,

1939, Serial No. 281,149

7 Claims. (01. 139-43) The preferred embodiment of the invention is shown in the accompanying drawing in which;

Fig. its a plan view of a loom showing all the heddle bars in raised position for the sake of clarity;

.Fig. 2 a longitudinal vertical section on the line 2-2 in Fig. 1;

. Fig. 3 a longitudinal vertical section, partly in side elevation, of a. heddle bar standard on an enlarged scale with two of the heddle bars raised and two lowered; and

. i Fig. 4 a front elevation of one of the supports. In the drawing like numerals of reference indicate corresponding parts in the different figures. fIhe loom comprises a frame I having two side members l l and two end members l 1 commonly called the back beam and the breastbeam respectively. The frame is mounted on a stand 2. A beater comb 3 is swingably mounted on arms 4 4 whichare pivoted tothe feet 5 of the stand 2, whereby the beatercomb 3 may be swung backwardly and forwardly to beat up the weft threads.

Mounted on the side members l l are heddle bar standards 6 each of whichis provided with four upright transverse guide slots I through which the ends of heddle bars 8 are adapted to extend.

As will be seen from Fig. 3, each standard 6 consists of a base (i mounted on the side frame member l end walls 6 and t and side walls 6 6 in which guide slots 1 are formed through which the heddle bars 8 extend. Between the side walls 6 6 and the end walls 6", 6 a central space i parallel thereto in which is mounted a coil spring H which engages a pin l2 and tends to pressthe pin l2 outwardly into engagement with the end of theextension l0 of the strip 9.

pressure of the spring I I.

The fingers 9 9 9 9 incline slightly rearwardly so that their upper ends will normally extend across the guide slots near the top thereof but sufficiently spaced from the top to leave room for a heddle bar to extend between the top of each finger and the top of the slot. When the fingers 9 are in position extending across the guide slots, the top surface thereof is adapted to support the heddle bars in raised position in the slots, and the rear sides of said fingers form lateral cam surfaces which are engaged by the heddle bars when they are raised in the slots, so that the upward movementof ny of the heddle bars in a guide slot 1 will engagz the cam surface of one of the fingers and move it out of the guide slot. The movement of one-of the fingers 9 will cause the strip 9 to slide inwardly against the pressure of the pin l2 carrying the other fingers 9 9 and 9 with it out of their respective guide slots 1, 1, 1-. If. there are any other heddle bars in a raised position at the time such heddle bar is lifted they will be released and will drop to the bottom of the guide slots. When the heddle bar reaches the top of the slot the slidable strip 9 on which the fingers 9 9 9 9 are mounted slides outwardly under pressure of the spring pin 12 and the finger 9 which was engaged by the raised heddle bar, returns to its normal position beneath the raised heddle bar 8, holding it in a raised position.

To simultaneously release such of the heddle bars 8 as are in a raised position, the turned down end of the extension iii of the horizontal strip 9 may be pushed inwardly by means of a thumb or finger Which will move the fingers 9 9 9?, 9 out of the guide slots 1.

As will be seen from Fig. 2, the turned down end of the extension llof the horizontal strip 9 may be engaged by the beater comb 3. on its forward movement, so that a heddle bar or bars may be released automatically by engagement of the comb beater.

In operation the heddle bars are lifted in the guide slots by grasping their ends and raising them, one or more at a time, for the purpose of creating a shed in the warp threads l4, which are connected in a known manner to the heddle bars by means of heddles. The raised heddle bars are dropped either by lifting another bar, or by A stop l3 limits the movement of the strip 9 under the i and slidable lengthwise of the standard, and have ing a plurality of fingers .each of which is normally adapted to support the heddle bars in raised,

position; and spring means normally retaining the holder in heddle bar'supporting position, said holder being slidable against the spring means out of the heddle bar supporting position.

2. In a loom the combination of a frame structure comprising a heddle bar standard formed with a plurality of upright transverse guide slots through which the ends of heddle bars may pass; a heddle bar holder mounted on said standard and slidable lengthwise of the standard, and having-a plurality of upstanding fingers each of which at its upper end normally extends across one of the guide slots and has a top surface adapted to support the heddle bar in raised position in said slot and a lateral cam surface to be engaged by such heddle bar when said bar is manually raised from its lower position to move the holder by sliding it along the standard to permit the said barto be lifted above the top surface of the finger; and springmeans to return the holder to its bar supporting position after the barisraised.

3. In a loom the combination of a frame structure comprising a heddle bar standard formed,

with a plurality of upright transverse guide slots through which the ends of heddle bars may pass; a heddle bar holder mounted on the standard and slidable lengthwise of the standard, and having-a plurality of upstanding fingers the upper end of each of which in one position of the holder is located in one of the guide slots and is adapted to support the end of a heddle bar in a raised position in such slot and in another position is located to one side of the guide slot to permit the heddle bar to drop to a lower position in such slot; and means tending to retain the heddle bar holder with said fingers in heddle bar supporting position within the slots. I 7

4, In a loom the combination of a frame structure comprising a heddle bar standard formed with a plurality of upright tran'sverse'guide slots through which the ends of heddle bars may pass, and a longitudinal central slot; a heddle bar holder comprising upstanding fingers mounted within the standard and slidable lengthwise of the standard in the longitudinal slot; a spring normally moving the heddle bar holder to a position in which the ends of the fingers are located in the transverse guide slots; and means for sliding the heddle bar holder longitudinally against the pressure of the spring to move the fingers out of the guide slots, said means comprising an extension of the heddle bar holder extending beyond the standard.

tension and pressing the latter outwardly to move the heddle rod holder to a position in which the ends of the fingers are located in the transverse guide slots, said heddle rod holder being so constructed and arranged that when the extension thereof is pushed towards the standard against the pressure of the spring the heddle rod holder will slide in the longitudinal slot to a position in which the fingers aremoved out of the guide slots thus permitting the heddle bars to drop.

6. In a loom, the combination of a frame structure including a breast beam, a back beam and side members; heddle rod standards on the side members, formed with a plurality of upright transverse guide slots; heddle bars, the ends of which extend through the guide slots; holdders for holding the heddle bars in a raised position, said holders being slidable lengthwise of the standard and having a plurality of upstanding fingers adapted. in one position to support the heddle rods and in another position to permit the heddle rods to drop; spring means tending to urge the heddle rod holders longitudinally of the frame towards the breast beam to heddle rod supporting position; and projections extending beyond the standards and adapted to be moved by manual pressure to slide the heddle rod holders against the pressure of the spring out of their heddle supporting positions.

7. In a loom, the combination of a frame structure including a breast beam, a back beam and side members; heddle rod standards on the side members, formed with a plurality of upright transverse guide slots; heddle bars, the ends of which extend through the guide slots; holders for holding the heddle bars in a raised position; said holders being slidable lengthwise of the standard and having a plurality of upstanding fingers adapted in one position to support the} heddle rods and in another position to permit the heddle rods to drop; spring means tending to urge the heddle rod holders longitudinally of the frame towards the breast beam to heddle rod supporting position; projections on the heddle rod holders projecting beyond the standards in the direction of the breast beam; and abeater comb slidable on the side members, said beater comb being adapted to be pushed into engagement with said projections to slide the heddle rod holders against the pressure of the springs out of their heddle supporting positions.

HERBERT SPENCER 

